package sbp.filter;

import javax.servlet.*;
import org.hibernate.SessionFactory;
import sbp.util.HibernateUtil;

public class ConexaoHibernateFilter implements Filter {
	public SessionFactory sf;
	
	public void init(FilterConfig config) throws ServletException {
		this.sf = HibernateUtil.getSessionFactory();
	}
	
	public void doFilter(ServletRequest servletRequest, 
		ServletResponse servletResponse, FilterChain chain) throws ServletException {
			try {
				this.sf.getCurrentSession().beginTransaction();
				chain.doFilter(servletRequest,servletResponse);
				this.sf.getCurrentSession().getTransaction().commit();
				this.sf.getCurrentSession().close();
		} catch(Throwable ex) {
			try {
				if(this.sf.getCurrentSession().getTransaction().isActive()) {
					this.sf.getCurrentSession().getTransaction().rollback();
				}
			} catch(Throwable t) {
				t.printStackTrace();
			}	
			throw new ServletException(ex);
		}
	}
	
	public void destroy() {	}
}